Grain-scourer.



PATEN'I'ED MAY y10, 1904..

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GRAIN SGOURBR. APPLICATION vFILED JULY 27, 1903.

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:Patented May 1o, 1904.

WILLIAM B. ALLEN AND HENRYALLEN, OF PITTSBURG, KANSAS GRAIN-SCOURER.

SPECIFICATION forming part of LettersPatentNo. 759,221, dated May 10,

Application filed July 27, 1903. Serial No. 167,186. (No model.)

To rtl/f tf1/1,0m, t may concern:

Be it known that we, WILLIAM B. ALLEN and HENRY ALLEN, citizens of the United States, residing at Pittsburg, in the county of Crawford and State of Kansas, have invented a new and useful Grain-Scourer, of which the following is a specification.

This invention relates to machines for scouring grains of various kinds, such as wheat and corn; and it has for its object to provide a device by means of which the cleaning and scouring may be effected in a perfect, thorough, and rapid manner.

Our invention especially relates tothe construction oi the scouring-cylinder, which is provided with a plurality of radially-extending screw-threaded teeth whereby the hulls of the grains shall be subjected to a rasping action, which is very effective in causing the said grains to be scoured or their hulls removed, ii' desired, thus, for instance, converting corn into hominy.

Our invention further consists in certain improvements in the detailed construction and arrangement of parts,whieh will be hereinafter fully described, and particularly pointed out in the claims.

In the accompanying drawingsA We have shown a simple and preferred form of our invention; but we desire it to be understood that we do not thereby necessarily restrict ourselves to the precise structural details shown, but reserve theright to all changes and modifications within the scope ot' our invention which may be resorted to without departing from the spirit orA sacrificing the eiiiciency of the same.

In said drawings, Figure l is a front view of a machine constructed in accordance with the principles of our invention, the machine being shown partly in section. Fig. 2 is a transverse sectional view of the scouring-cylinder removed -from its casing. Figs. 3 and t are detail views illustrating modifications in the construction oi' the scouringcylinder. Fig. 5 is a detail side View showing another modification of the scouring-cylinder. Fig.

6 is a sectional detail view taken through the foraminous cylinder and the sleeve adjustable thereon.

Corresponding parts in the several iigures are indicated by similar numerals of reference.

'Ihe scouring-cylinder, which constitutes the principal part oi' our invention and which in the drawings has been designated 1, is composed of a cylindrical core 2, a surrounding band 3, which may be ot' leather, rubber, or any Inaterial or composite material suitable forr the purpose, and a plurality of radiallyextending screws 4C, which extend through'the flexible band 3, with their heads abutting upon the perimeter oil" the cylinder and with their points extending outwardly, as shown. The screws employed need not be oi' `any special construction, inasn'iuch as ordinary woodscrews of proper dimensions may be used with excellent results.

Vv'hile We have thus far described the scouring-.cylinder as consisting' simply of the core, the flexible band, and the radiating screws, We have in the preferred form of our inv ention (illustrated in Figs. l and 2) shown two bands of sheet metal-namely, an inner band 5 and an outer band 6. rIhe inner band 5 has been shown as surrounding the wooden cylindrical core 2, the heads of the screws 4E abutting upon the outer surface ot' said metallicband. The band 6 is disposed exteriorly of the flexible band 3 and is provided with appropriately-disposed perforations, through which the screws tare extended. Vhen this construction is employed, it is obvious that the heads oi the screws are steadied and supported by contact with the metallic band 5, which will not ,readily yield to the pressure of the screw-heads, as would a wooden surface. The outer metallic band 6 likewise braces the points ol the screws 4- and by so doing prevents injury to the flexible band in which they are mounted.

Many other modifications may be resorted to within the scope of our invention. Thus it is obvious that instead ot' a metallic-faced cylinder a metallic cylinder may be used. Again, as shown in Fig. 3, the screwsd may be extended not only through the iiexible band, here designated 3, but through the outer and inner metallic bands, here designated 6 5, as well. Again, as shown in Fig. 4, an inner metallic band, here designated 5h, may be used in connection with the surrounding flexible band, here designated 3b, the screws being extended through the latter only to the outer side of said band. Between the rows of screws are secured separate strips 6c of sheet metal, which by abutting against the projecting portion of the screws will assist in sustaining the latter in position. The strips 6 may be nailed or otherwise secured to the cylinder. It will be understood from the foregoing description that our scouring-cylinder is composed, essentially, of acylindrical body having' radially extending teeth, the said teeth being in the shape of screws, the spiral flanges of which practically serve as rasps, which by contacting with the grain serve to effect the scouring or hulling in a very ready, speedy, and satisfactory manner. Incidentally these radially-extending scouring-screws, as they may be termed, are connected iiexibly with the core of the cylinder through the medium of the flexible band in which they are mounted. This feature is of great importance, inasmuch as while a reasonable degree of stiffness should be preserved absolute rigidity of the radially-extending screws is not desirable, and inasmuch as the device if the iixible band alone were used would be liable to rapid wear, whereby the position of the screws might be disturbed, we avail ourselves of the auxiliary metallic bands, which without interfering with the necessary iiexibility of the radial screws will brace the latter, cause them to retain their desired position, and also protect the fiexible band against rapid wear.

With regard to the disposition f the screws with relation to the cylinder it will be seen by reference to Fig. 4 that said screws are disposed spirally, this being for the purpose of causing the material that is operated upon to be fed during operation from one end of the inclosing casing to the other, or, in other words, from the feed to the discharge end.

In Fig. 1 of the drawings our improved scouring-cylinder has been mounted for operation in a foraminous casing 7, which is suitably mounted within an outer casing 8. A shaft 9, extending through the core of the scouring-cylinder, has bearings 10 in the ends of the outer casing, and said bearings support lubricating-cups 11 of ordinary construction. The foraminous cylinder 7 has closed ends 12 and 13, which, as shown in Fig. 1, may constitute the heads of the outer casing, and one of these heads carries the feed-spout 14, while the other has a discharge-opening 15, capable of being closed by means of suitably-constructed slides 16. The bottom of the outer casing is also provided with an opening 16 for the escape of the scourings. It is obvious that, according to the different purposes for which the machine is to be utilized, the construction of the casing may be altered and modified to any extent within the scope of our invention; but inasmuch as changes of this character are generally known and well understood it is not deemed necessary further to describe or illustrate them in connection with the present application, with the exception that in Fig. 1 the foraminous cylinder 11 has been shown as provided at opposite ends thereof with perforations 2O and 21, the former of which are much larger than the latter, these being the ones which are exposed and in active use when corn is being operated upon. The foraminous cylinder is also shown as being partly inclosed for about one-half its length by a movable sleeve 22, which has openings of a size corresponding with the size of the small openings 21. When corn is being operated upon, only one-half of the cylindernamely, that having the large openings 2O-w will be exposed for active use, while when grain, such as wheat, is being operated upon the sleeve 22 will be shifted over the portion of the cylinder having the large openings 20, which latter readily admit of the passage of the wheat-scourings to and through the openings in said sleeve portion 22. It may be stated also that in many cases a fan and suitable connections will be used for the purpose of removing the waste matter and thoroughly cleansing the output; but such fan and connecting-ducts being very well known in the art they have not been shown.

From the foregoing description, taken in connection with the drawings hereto annexed, the operation and advantages of our invention will be readily understood by those skilled in the art to which it appertains. It combines simplicity and ease of operation with efficiency and general utility. It may be constructed at a moderate expense, and an important feature which should not be lost sight of is this, that our improved machine, while applicable to a variety of uses, occupies very little space and is therefore in all respects economical and useful.

Having thus described our invention, we claim- 1. In adevice of the class described, ascouring-cylinder comprising a core, a metal facing, a iexible band surrounding' said facing, a metallic band surrounding said fiexible band, and a plurality of screws extending radially through the flexible band and the exterior metallic band, the heads of said screws being supported against the exterior surface of the metallic facing.

2. In a device of the class described, a foraminous cylindrical casing having large IOO IIO

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In testimony that we claim the foregoing as our own we have hereto aflxed our signatures 10 in the presence of two Witnesses.

WILLIAM B. ALLEN. f HENRY ALLEN. VVitneSSes:

B. W. PRIGKETT, OTTO GREEF. 

